Temperature regulating device



Dec. 15, 1931. A. L. WERTZ 1,837,000

TEMPERATURE REGULATING DEVICE Filed Sept. 9, 1929 Patented Dec. 15, 1931PATENT OFFICE AUSTIN L. WERTZ, OF LAKEWOOD, OHIO TEMPERATURE aneuna'rmeDEVICE Application filed September 9, 1929. semi m5. $01,203:.

My invention relates to temperature regulating and heating devices andmore particularly to such devices adapted for the controlling oftemperature lubricant contained in dis ensers. i

n lubricant dispensers of the type which are not buried in the ground,the lubricant is subjected to great changes in temperature.

The heavier lubricants or oils become very viscous in the winter timeand are normally verydiflieult to pump.

An object of my invention is the provision of means for controlling thetemperature of the oil in such a dispenser to facilitate pumpingthereof.

Anotherobject is the provision of means to indicate when the temperatureof the oil falls below a predetermined value and the provision of othermeans to heat the oil for maintaining it within a predetermined range oftemperatures.

Other objects and advantages of my invention will become apparent fromthe following description.

In the accompanying drawings,

I Fig. 1 is an elevational view of a conventional type of lubricantdispenser showing my invention incorporated therein;

Fig. 2 is an enlarged sectional view of my temperature controllindevice;

Fig. 3 is an enlarge vertical section of a fragment of that shown inFig. 2, and taken in a plane at right angles to Fig; 2;

Fig. 4 is a cross sectional view adjacent one end of the heating elementand looking in the direction of the heating element to show the meansfor spacing it from the tubular container; and p Fig. 5 is adiagramillustrating the electric circuits of my invention.

. hedispenser shown in Fig. 1 maybe of any conventional constructioncomprisin a tank or oil container 11 having a suita le mechanism. 12mounted thereon, for dispensin oil from the tank.

y invention; is applied to the dis enser by inserting the samein thetank into t e position shown in dotted outline in Fig. 1. V Numeral 13represents heatin elements of the electrical resistance type 'w ich areelectrically connected in parallel by jumpers 14 and 15, and in parallelwith an incandescent light bulb 16 by conductors 17 and 18. A- conductor19 connects the heaters in series with a thermostatic element 21 havinga con- 56 tact 22 thereon which is normally but of en gagement with butadapted to engage contact 23 on'the spring conductor 24wh1ch isadjustable by means of a set screw 25 and a nut 26 for the purpose ofpredetermining the temperature below which the contacts 22 and 23 becomeengaged for completing a circuit through the heaters and lamp inparallel, all in series with the thermostat, A conductor 27 leads fromthe lower end of the heaters to the line conductor 28 which is alsoconnected by a screw 29 to conductor 17. Conductor 31 leads from thespring conductor 24to the other line conductor 82 for' completing thecircuit whenever the teni erature-of the .70 region of the thermostatfal below a degree for which it is adjusted to operate. 7

The heating elements 13 'are positioned in the lower end of a metaltube- 38 and held in spaced relation thereto by set screws 35175 andlock nuts 36 thereon, A dia hragm or partition 37 preferably composed'of highgrade insulating material separates the lower end of the tubefrom the'upper end to substantially prevent transmission of heat up;wardly, thus'-requiring.=the'heat from below to conduct outwardly intothe oil which normally surrounds the tube.

The thermostat operates b heat which is conducted inwardly throu thetube 38' from the oil. Were it not or the artition 37, heat from theelements 13, woul operate. the thermostat too quickly andholdith 6 1tacts 22 and 23 apart and prevent useful op ration of the device.- "1

a The tube 38 is formed with a closed bottom and the top is closed by acap 39 and a vertical conduit 41 fixed thereinto. The conduit 41extends'through the top of the tank'or dispenser and is provided-with-alurality'of openings 43 for the escape of he therein and forventilation.

The bulb 16 is fitted in a socket 4 5' fixed developed {a casin 46 whichis provided was an opening i8v aving atransparent c1o sufe'47thereupstanding lug 53 on the partition 37 and 8 extends through anabutment plate 54 against which the end of set screw 25 is adapted toengage, also a vertical portion 55 of the supporting member 56, andplates 57 and 58 of insulating material.

Through the upper end of the support 56 asses a bolt 61 which isinsulated therefrom y insulating strips.62 and 63. The bolt 61 is incontact with the thermostatic element 21 and passes through but isinsulated from the spring conductor 24. To the outer end of bolt 61 issecured conductors 18 and 19 by nuts 65 and 66 electrically connectingthem with thethermostatic element 21.

In operation the tube 38 is immersed in oil within the tank or containerand when the temperature of the oil drops below a predetermined degree,the thermostatic element closes the contacts 22 and 23, therebycompleting an electric circuit through the electric bulb and through theheaters in parallel. When the heaters raise the temperature of the oilabovethe predetermined temperature, heat from the oil is absorbed by thethermostat which again opens the contacts 22 and 23, thereby breakingthe electric circuit and shutting oil the heaters and the light.

I claim as my invention:

1. A temperature control device for a lubricant dispenser comprising anelectric circuit including a heating element and a thermostatic circuitbreaker in series, a closed bottom tube of heat conducting materialadapted to be immersed in the lubricant, a heat insulating partitiondividing the interior ofsaid tube into two compartments,'said heatingelement being-in one of said compartments and said thermostatic circuitbreaker being in the other compartment, a thermostatic support fixed tosaid partition and spaced from the walls of said tube, a conduit leadingfrom one of said compartments to a point above the lubricant and havingventilating openings therein.

unit, said thermostat being operable to open said circuit when heated tothe predetermined temperature and means for adjusting the temperature atwhich said thermostat is operable.

3. A device of the class described for controlling the temperature oflubricant comseries, means for spacing said heating means from the wallof said unit, means fixed on and wholly supported by said partition andsupporting said thermostat spaced from the wall of said unit, saidthermostat being op erable to open said circuit when heated to thepredetermined temperature, means for adjusting the temperature at whichsaid thermostat is operable, and an electric signal connected in circuitwith said thermostat for indicating when the circuit is closed.

1 I In wltness whereof, I hereunto subscrlbe day of September, 1929.

my name this 4th AUSTIN L. WERTZ.

2-. 'Adevice of the class described for controlling the temperature oflubricant comprising a two-compartment unit formed of heat conductingmaterial and adapted to be immersed inthe lubricant, an insulatingpartition forming a heat barrier between the two compartments, heatingmeans in one of said compartments and 'a thermostat in the othercompartment, an electric circuit including saidthermostat and saidheating means in series, means for spacing said heating means from thewall of said unit, a'si lpporting member for said thermostat fixed tosaid partition and spaced from the wall of said

